Home / 1,921,907.70-2,882,861.55-1,215,069.30

Finding the Fourth Proportional to 1,921,907.70, 2,882,861.55 and 1,215,069.30

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Solution

The fourth proportional to 1,921,907.70, 2,882,861.55 and 1,215,069.30 is: 1,822,603.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921,907.70 : 2,882,861.55 = 1,215,069.30 : x
  2. Step 2: Convert to fraction form
    1,921,907.70/2,882,861.55 = 1,215,069.30/x
  3. Step 3: Cross multiply
    1,921,907.70x = 2,882,861.55 × 1,215,069.30
  4. Step 4: Simplify right side
    1,921,907.70x = 3,502,876,565,555.42
  5. Step 5: Solve for x
    x = 3,502,876,565,555.42/1,921,907.70
  6. Step 6: Final answer
    x = 1,822,603.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.